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What Part of a Globe Valve Has the Same Purpose as the Disk in a Butterfly Valve?

The post What Part of a Globe Valve Has the Same Purpose as the Disk in a Butterfly Valve? first appeared on the ISA Interchange blog site.

AutoQuiz is edited by Joel Don, ISA’s social media community manager.

Today’s autoAutoQuiz20150626mation industry quiz question comes from the ISA Certified Control Systems Technician (CCST) program. Certified Control System Technicians calibrate, document, troubleshoot, and repair/replace instrumentation for systems that measure and control level, temperature, pressure, flow, and other process variables. Click this link for information about the CCST program.

Which of the following parts of a globe valve serve the same purpose as the disk in a butterfly valve?

A) Seat
B) Plug
C) Packing rings
D) Packing flange
E) None of the above

 

<span class="collapseomatic " id="id3373" tabindex="0" title="Click Here to Reveal the Answer“>Click Here to Reveal the Answer

The answer is B. In a butterfly valve, it is the disc that is the moving part that regulates flow volume and comes in contact with a stationary structure, the body, to terminate flow. In the globe valve, the plug’s movement performs these same functions. The other three choices are legitimate valve parts.

Source: ISA News